功勋
凝聚态物理
热电效应
分子束外延
物理
量子阱
量子
兴奋剂
材料科学
量子力学
外延
纳米技术
光学
激光器
图层(电子)
作者
L. D. Hicks,T. C. Harman,Xin‐Yuan Sun,M. S. Dresselhaus
出处
期刊:Physical review
日期:1996-04-15
卷期号:53 (16): R10493-R10496
被引量:729
标识
DOI:10.1103/physrevb.53.r10493
摘要
Recently, it has been shown theoretically that it may be possible to increase the thermoelectric figure of merit ($Z$) of certain materials by preparing them in the form of two-dimensional quantum-well structures. Using $\mathrm{PbTe}/{\mathrm{Pb}}_{1\ensuremath{-}x}{\mathrm{Eu}}_{x}\mathrm{Te}$ multiple-quantum-well structures grown by molecular-beam epitaxy, we have performed thermoelectric and other transport measurements as a function of quantum-well thickness and doping. Our results are found to be consistent with theoretical predictions and indicate that an increase in $Z$ over bulk values may be possible through quantum confinement effects using quantum-well structures.
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